Effect of soluble sugar content in silique wall on seed oil accumulation during the seed-filling stage in Brassica napus

2018 ◽  
Vol 69 (12) ◽  
pp. 1251
Author(s):  
Fei Ni ◽  
Jiahuan Liu ◽  
Jing Zhang ◽  
Mohammad Nauman Khan ◽  
Tao Luo ◽  
...  
Keyword(s):  
Seed Yield ◽  
Seed Oil ◽  
Sugar Content ◽  
Soluble Sugar ◽  
C:N Ratio ◽  
Oil Accumulation ◽  
N Application ◽  
Soluble Sugar Content ◽  
Oil Synthesis ◽  
Oil Concentration

Soluble sugar content in silique wall and seeds of rapeseed (Brassica napus L.) has significant effects on seed oil formation and accumulation. We studied the relationship between soluble sugar content in B. napus seeds and silique wall and oil concentration under field conditions in two cropping seasons, and examined changes in soluble sugar content in seeds and silique wall under different nitrogen (N) levels. Two commercialised Chinese rapeseed varieties, HZ9 and HZ62, with high seed yield and different N responses were used. Our results indicated that carbon (C):N ratio and soluble sugar content in silique wall had the greater effect on seed oil concentration. When C:N ratio and soluble sugar content in silique wall were within 5–15% and 10–25%, respectively, plants had relatively well coordinated C and N metabolism, facilitating oil accumulation. During 25–35 days of silique development, when C:N ratio and soluble sugar content in silique wall were within 10–15 and 15–25%, respectively, oil synthesis was fastest; the highest accumulation rate was 3.8% per day. When they were each <5%, seeds tended to mature, and oil synthesis gradually decreased, ceased or degraded. During the early stage of silique development, if C:N ratio and soluble sugar content in silique wall were >15% and 30%, there was no apparent tendency for oil accumulation, probably because of adverse environmental conditions. When N application increased from 0 to 270kg ha–1, final oil concentration in seeds decreased by 0.024%. In summary, C:N ratio and soluble sugar content in silique wall are important in regulating seed oil concentration, whereas excessive N application significantly reduced seed oil concentration. Therefore, appropriate reduction of N application would save resources, provide environment benefits and increase rapeseed oil production with no substantial reduction in seed yield, through coordinated seed yield and oil concentration.

The Influence of Chlorophenoxy Herbicides MCPA on Creeping Bentgrass Physiological Index

2011 ◽  
Vol 356-360 ◽  
pp. 2763-2766 ◽  
Author(s):  
Yang Fan Gao ◽  
Ming Wang Shi ◽  
Jian Hua Wang
Keyword(s):  
Chlorophyll Content ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Creeping Bentgrass ◽  
Physiological Index ◽  
Soluble Sugar Content ◽  
Content Determination ◽  
Chlorophenoxy Herbicides ◽  
Test Result

In this article, we studied to different concentrations of MCPA to creeping bentgrass Growth. Through the creeping bentgrass in four different periods of chlorophyll content, MDA and soluble sugar content determination. This test result showed:With the MCPA concentration increases, creeping bentgrass decline of chlorophyll content in the same period of growth, MDA and soluble sugar content increased. MCPA used after the early pair of creeping bentgrass growth is large, to put off with MCPA handle time, to affect to creeping bentgrass growth is gradually decreased.

Recovery of field-grown canola from sulfur deficiency

1996 ◽  
Vol 36 (1) ◽  
pp. 79 ◽  
Author(s):  
PJ Hocking ◽  
A Pinkerton ◽  
A Good
Keyword(s):  
Seed Yield ◽  
Seed Oil ◽  
No Reduction ◽  
Stem Elongation ◽  
Potassium Sulfate ◽  
Growth Stages ◽  
Flower Buds ◽  
S Deficiency ◽  
Oil Concentration ◽  
Seed Yields

Sulfate-sulfur was applied to sulfur (S)-deficient canola at several growth stages in a field experiment at Cargo near Orange, New South Wales. Applications of 0, 10 or 40 kg S/ha (S0, S10 and S40) as mixtures of potassium sulfate and potassium chloride were made at sowing, the 5-6 leaf rosette stage, flower buds visible, stem elongation and first flowering. The plots received either 80 or 160 kg nitrogen (N)/ha at sowing. Plants from the S0 plots showed symptoms of severe S deficiency during rapid stem elongation, and had a 52% reduction in seed yield and a 21% reduction in seed oil concentration compared with the S40 plants. Application of S10 at sowing, or topdressing S-deficient plants with this rate of S, was inadequate because, although seed oil concentrations were normal (39-42%), seed yields were 25% lower than those from plots that received S40. Topdressing S-deficient plants with S40 at either the 5-6 leaf rosette stage, flower buds visible or stem elongation resulted in the same seed yields and seed oil concentrations as obtained when S40 was applied at sowing. However, there was a 15% reduction in seed yield but no reduction in seed oil concentration when the S40 topdressing was delayed until flowering. Although S10 was inadequate to correct the S deficiency, there was no reduction in either seed yield or seed oil concentration when S10 was topdressed as late as flowering, when compared with this rate of S applied at sowing. Seed meal protein levels were increased by the S40 topdressings. Concentrations of S in seed from the S0 and S10 plants were below the critical value of 0.36% for canola. Seed N:S concentration ratios of S-deficient plants were greater than 10, but 7.5 for plants which received adequate S. Total glucosinolates in seed were increased by the application of S, but the levels were still well below the limit set for the canola standard.

scholarly journals A Long-Day Photoperiod and 6-Benzyladenine Promote Runner Formation through Upregulation of Soluble Sugar Content in Strawberry

2020 ◽  
Vol 21 (14) ◽  
pp. 4917
Author(s):  
Yali Li ◽  
Jiangtao Hu ◽  
Hao Wei ◽  
Byoung Ryong Jeong
Keyword(s):  
Molecular Mechanisms ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Orthogonal Test ◽  
Influential Factor ◽  
Asexual Propagation ◽  
Soluble Sugar Content ◽  
Long Day ◽  
Seed Propagation ◽  
Dimensional Electrophoresis

Commercial strawberries are mainly propagated using daughter plants produced on aerial runners because asexual propagation is faster than seed propagation, and daughter plants retain the characteristics of the mother plant. This study was conducted to investigate the effective factors for runner induction, as well as the molecular mechanisms behind the runner induction. An orthogonal test with 4 factors (photoperiod, temperature, gibberellin, and 6-benzyladenine), each with 3 levels was performed. Proteins were also extracted from the crowns with or without runners and separated by two-dimensional electrophoresis. The results of the orthogonal test showed that a long-day (LD) environment was the most influential factor for the runner formation, and 50 mg·L−1 of 6-BA significantly increased the number of runners. A proteomic analysis revealed that 32 proteins were differentially expressed (2-fold, p < 0.05) in the strawberry crowns with and without runners. A total of 16 spots were up-regulated in the crowns with runners induced by LD treatment. Identified proteins were classified into seven groups according to their biological roles. The most prominent groups were carbohydrate metabolism and photosynthesis, which indicated that the carbohydrate content may increase during runner formation. A further analysis demonstrated that the soluble sugar content was positively correlated with the number of runners. Thus, it is suggested that the photoperiod and 6-BA break the dormancy of the axillary buds and produce runners by increasing the soluble sugar content in strawberry.

scholarly journals Effects of Biochar on Soluble Sugar Content in Peach Seedlings

2019 ◽  
Vol 136 ◽  
pp. 07010
Author(s):  
Jing Sun ◽  
Zhiyu Li ◽  
Jinpeng Zhu ◽  
Yuxi Wang ◽  
Tonghao Cui ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Plant Height ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Stem Diameter ◽  
Corn Straw ◽  
Paddy Straw ◽  
Soluble Sugar Content ◽  
Rape Straw ◽  
Significant Difference

A pot experiment was conducted to study the effects of different biochar types [addition of rape straw biochar (RB), addition of paddy straw biochar (PB), addition of wheat straw biochar (WB) and addition of corn straw biochar (MB)] on the soluble sugar content and plant height of peach seedlings. The result showed that the soluble sugar content in roots and leaves of peach seedlings treated with biochar was lower than the control. However, the soluble sugar content in stems was higher than control compared with the control. In the soluble sugar content in the aboveground part, there was no significant difference between the treatment of adding biochar and the control except for the treatment of PB. All the treatment of adding biochar increased the plant height of peach seedlings except the treatment of MB than the control and the treatment of RB and PB were at a higher level. Compared to control, all biochar addition treatments increased stem diameter of peach seedlings and the treatment of RB and PB were at a higher level. Therefore, the treatment of RB and PB was beneficial to the growth of peach seedlings.

Genetic characteristics and QTL analysis of the soluble sugar content in ripe tomato fruits

2021 ◽  
Vol 276 ◽  
pp. 109785
Author(s):  
Yao Tang ◽  
Jing Ren ◽  
Chunxin Liu ◽  
Jingbin Jiang ◽  
Huanhuan Yang ◽  
...  
Keyword(s):  
Qtl Analysis ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Tomato Fruits ◽  
Genetic Characteristics ◽  
Soluble Sugar Content ◽  
Ripe Tomato

scholarly journals WHIRLY1 Regulates HSP21.5A Expression to Promote Thermotolerance in Tomato

2019 ◽  
Vol 61 (1) ◽  
pp. 169-177 ◽  
Author(s):  
Kunyang Zhuang ◽  
Yangyang Gao ◽  
Zhuangbin Liu ◽  
Pengfei Diao ◽  
Na Sui ◽  
...  
Keyword(s):  
Heat Stress ◽  
Heat Shock ◽  
Crop Yields ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Membrane Stability ◽  
Heat Shock Factors ◽  
Soluble Sugar Content ◽  
Ros Accumulation ◽  
Elicitor Response

Abstract Heat stress poses a major threat to plant productivity and crop yields. The induction of heat shock proteins (HSPs) by heat shock factors is a principal defense response of plants exposed to heat stress. In this study, we identified and analyzed the heat stress-induced Whirly1 (SlWHY1) gene in tomato (Solanum lycopersicum). We generated various SlWHY1-overexpressing (OE) and SlWHY1-RNA interference (RNAi) lines to investigate the role of WHIRLY1 in thermotolerance. Compared with the wild type (WT), the OE lines showed less wilting, as reflected by their increased membrane stability and soluble sugar content and reduced reactive oxygen species (ROS) accumulation under heat stress. By contrast, RNAi lines with inhibited SlWHY1 expression showed the opposite phenotype and corresponding physiological indices under heat stress. The heat-induced gene SlHSP21.5A, encoding an endoplasmic reticulum-localized HSP, was upregulated in the OE lines and downregulated in the RNAi lines compared with the WT. RNAi-mediated inhibition of SlHSP21.5A expression also resulted in reduced membrane stability and soluble sugar content and increased ROS accumulation under heat stress compared with the WT. SlWHY1 binds to the elicitor response element-like element in the promoter of SlHSP21.5A to activate its transcription. These findings suggest that SlWHY1 promotes thermotolerance in tomato by regulating SlHSP21.5A expression.

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